Máy đo độ ồn tích phân, Type 1, phân tích phổ, có thể SD
Model: SC420
Hãng sản xuất: CESVA – Tây Ban Nha
Xuất xứ: Tây Ban Nha
1. Tính năng kỹ thuật:
- Can be expanded with advanced measurement modes (see optional Modules)
- Increased storage with MicroSD memory card, 4 GB class 4 microSD cards
- Audio recording with pre-recording and voice comments
- Automated Parameters: timers, DEN thresholds, external input: 1) Auto start/stop of measurement and logging2) Auto audio recording & pre-recording
- Erasing backward (BACK ERASE function)
- Built-in USB & BLUETOOTH® connectivity
- Sensitivity, date & time change history
- Free or diffuse sound-field correction options
2. Thông số kỹ thuật:
3. Lựa chọn thêm:
STT
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Thành phần
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Mã Code
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1
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OCCUPATIONAL NOISE
Code: DS420
What does it measure?
- Occupational noise mode simultaneously measures all the parameters necessary to evaluate the noise exposure of the worker with and without hearing protectors (SNR, HML and Octaves).
Applications:
- Industrial acoustic
- Noise measurements for air conditioning installations (HVAC)
- Sound Insulation measurements
- Frequency analysis of industrial noise, environmental and labour
- Background noise in rooms
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DS420
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2
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1/1 OCTAVE FILTERS
Model: OF420
What does it measure?
- 16 Hz to 16 kHz octave band filters analysis plus overall functions and NC and NR curves
Applications:
- Sound insulation measurements:
- Noise measurement for air conditioning installations ( HVAC)
- Frequency analysis of industrial noise, environmental and labour
- Background noise in rooms
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OF420
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3
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1/3 OCTAVE FILTERS
Model: TF420
What does it measure?
- 10 Hz to 20 kHz 1/3-octave band filters analysis plus overall functions
Applications:
- Sound Insulation measurements in third octave band
- Assessment of environmental noise (Corrections for the presence of tonal and impulsive components and low frequency content)
- Detection and identification of noise sources
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TF420
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4
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REVERBERATION TIME
Model: RT420
What does it measure?
- Reverberation time measurement by 1/1 and 1/3-octave bands using the interrupted noise and the integrated impulse response methods. Includes parameters for the evaluation of non-linear decay curves and the influence of the filters
Applications:
- Evaluation of the reverberation time of rooms
- Measurement of sound absorption in a reverberation room
- Measurement of soud insulation in buildings and of construction materials
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RT420
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5
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FFT ANALYSIS
Model: FF420
What does it measure?
- FFT Analysis of 10000 lines from 0 to 20000 Hz (2 Hz/line)
Applications:
- Detection and evaluation of the tonal components
- Frequency analysis of continuous and transient signals (industrial and environmental)
- Evaluation of tonal components according to ISO 1996-2 and DIN 45681.
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FF420
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6
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ANALYSIS QUALITY AUDIO RECORDING Model: HI420
What does it measure?
- Records WAV (uncompressed) format audio files, 24 bits resolution, 48 kHz sampling frequency and constant gain for later analysis
Applications:
- This mode can be advantageous independently of the application in which it is being used as it allows a perfect acquisition of the audio signal, to carry out a post processing and obtain additional information.
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HI420
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